BEIJING, July 15 (Xinhua) -- Lock-up shares worth about 46.59 billion yuan (about 6.96 billion U.S. dollars) will become eligible for trading on China's bourses next week.

Over 2.21 billion shares will become tradable on the Shanghai and Shenzhen stock exchanges from July 16 to 20, according to information service provider Wind Info.

Shenzhen Feima International Supply Chain, Ningxia Jiaze Renewables, and China Railway Group will each contribute more than 300 million shares that will become tradable next week.

Under China's market rules, major shareholders must wait for one to two years before they are permitted to sell their shares.

Chinese stocks closed mixed Friday, with the benchmark Shanghai Composite Index down 0.23 percent, at 2,831.18 points. The Shenzhen Component Index closed 0.58 percent higher at 9,326.97 points.